EGSB反应器内厌氧颗粒污泥性质的研究王妍春

:2002-05-10　:2002-06-06::(1972-),,,,。EGSB王妍春,左剑恶,肖晶华(,　100084)　:EGSB。,(Vup),,;,Allen;,。:EGSB;;;;:X703,S216.4　:A　:1000-1166(2002)04-0003-05AStudyonCharacteristicsofAnaerobicGranularStudgeinanEGSBReactor/WANGYan-chun,ZUOJia-ne,XIAOJing-hua/(DepartmentofEnviromnentalScienceandEngineering,TsinghuaUniversity,Beijing100084,P.R.ChinaAbstract:Inthispaper,astudyonthecharacteristicsofanaerobicgranularsludgeinalab-scateEGSBreactortreatingsyntheticorganicwastewaterwasconducted.Theresultsshowedthat:alongwiththereactorsoperationandthehydraulicup-flowvelocityincreased,thediameterofgranularsludgealsoincreased,andthediameterofthegranulesinthebottomofthesludgebedwerelargerthanthatintheupperpartofthesludgebed.Thesettlingvelocityofgranularsludgeincleanwaterwasproportionaltoitsdiameter,andthierrelationcouldbedescribedwithAllenequation.Observedunderthescanningelectronicmicroscopy,wefoundthatdifferentbacteriagrewanddistributedindifferentregionsonthesurfaceandintheinnerpartofagivengranularsludge.Keyword:EGSBreactor,anaerobicgranularsludge,granulardiameter,settlingvelocity,bacteriadistribution　　(EGSB),[1～5]。UASB,EGSB。EGSB、,。1　1.1　EGSB,35℃±1℃,8.08L,4.26L;2.56m,2.17m。1.2　试验用水,,COD∶N∶P200∶5∶1,。pH6.8～7.2。1.3　接种污泥3　ChinaBiogas2002,20(4)UASB。1.4　主要分析项目(1)COD:TL-1ACOD(2)pH:TPX-90ipH;(3)(SS)(VSS):[6];(4):,1.4,1.25,1.0,0.8,0.6,0.40.2mm,、,,,;　　(5):1L,,。,t,V=H/t(V,H,t)。,20～30,;(6):,:,,,,,。2　2.1　EGSB反应器的运行过程与结果,EGSB150d,32d[7],118d。1,,,EGSB5.78kgCOD·m-3d-120.72kgCOD·m-3d-1,COD90%。1　EGSBCOD/mg·L-1/L·d-1/kgCOD·m-3d-1HRT/hCOD/%33～46d53208.85.7822.290.447～71d519611.67.4316.892.672～101d499316.610.2611.793.8102～150d620927.020.727.291.72.2　颗粒污泥的颜色及形状EGSB,。,,,、,,,。;56d,,;101d,,、、,,;122d,;150d,,。,4　ChinaBiogas2002,20(4),,,。2.3　颗粒污泥的粒径分布情况,56d、101d、122d150d,2,4Vup0.90m·h-1,2.03m·h-1,3.11m·h-13.45m·h-1。2,56d0.8～1.0mm;101d0.8～1.0mm,56d,0.8～1.0m,,0.8～1.0mm;122d,1.0～1.25mm;150d,1.4mm。,,。EGSB,,3150d。3,,0.8～1.0mm1.0～1.25mm,0.8mm,20%,1.4mm,30.3%。2.4　颗粒污泥的沉速,,。,45。4,;,。5,,。　　,[8];　　　μ=43gCDρp-ρ1ρ1d(1):μ———;5　ChinaBiogas2002,20(4)ρp,ρ1———;g———;d———;CD———。CDRe(Re=d·u·ρμ),1Re1000,CD=10/Re,(1)(Allen):　　　μ=4225(ρp-ρ1)2g2μρ113d(2),,ρp1.03g·cm-3,ρ11.00g·cm-3,g9.8m·s-2,μ0.01g·cm-1s-1[9]。4,,2。4,(2),,2。6,,。,EGSB,,。2　/mm0.30.50.70.91.1251.325/m·h-113.0319.6525.4938.0344.4353.49/m·h-112.4620.7729.0837.3946.7455.052.5　颗粒污泥的生化特征150d,,6　ChinaBiogas2002,20(4),(7a),(8),(8)。,(9)。3　　　EGSB,:(1),,;(2),Allen;(3)。:[1]　,,.(EGSB)[J].,2000,18(4):3～8.[2]　Rebac,etal.High-rateanaerobictreatmentofmaltingwastewaterinapilot-scaleEGSBsystemunderpsy-chrophilicconditions[J].J.Chem.Tech.Biotechnol.,1997,68:135～146.[3]　Nuneg,etal.Anaerobictreatmentofslaughterhousewastewaterinanexpandedgranularsludgebed(EGSB)re-actor[J].Wat.Sci.Tech.,1999,40(8):99～106.[4]　,,,.(EGSB)[J].,2001,19(2):8～11.[5]　Zoutberg,etal.Thebiobed　EGSB(ExpandedGranularSludgeBed)systemcoversshortcomingoftheupflowanaero-bicsludgeblanketreactorinachemicalindustry[J].Wat.Sci.Tech,1997,35(10):183～188.[6]　.()[S].1997.[7]　,,,.EGSB[J].,2001,27(3):26～30.[8]　,.()[M].:,1996.[9]　,.[M].:1989.7　ChinaBiogas2002,20(4)